US7357544B2 - Night vision system for motor vehicles - Google Patents
Night vision system for motor vehicles Download PDFInfo
- Publication number
- US7357544B2 US7357544B2 US11/174,835 US17483505A US7357544B2 US 7357544 B2 US7357544 B2 US 7357544B2 US 17483505 A US17483505 A US 17483505A US 7357544 B2 US7357544 B2 US 7357544B2
- Authority
- US
- United States
- Prior art keywords
- filter
- visible part
- angle
- color
- radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
- 230000004297 night vision Effects 0.000 title description 7
- 230000005855 radiation Effects 0.000 claims abstract description 56
- 230000000694 effects Effects 0.000 claims description 11
- 238000001228 spectrum Methods 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 57
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 52
- 229910052681 coesite Inorganic materials 0.000 description 27
- 229910052906 cristobalite Inorganic materials 0.000 description 27
- 239000000377 silicon dioxide Substances 0.000 description 27
- 235000012239 silicon dioxide Nutrition 0.000 description 27
- 229910052682 stishovite Inorganic materials 0.000 description 27
- 229910052905 tridymite Inorganic materials 0.000 description 27
- 230000005540 biological transmission Effects 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 206010034960 Photophobia Diseases 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000869 ion-assisted deposition Methods 0.000 description 2
- 208000013469 light sensitivity Diseases 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000484 niobium oxide Inorganic materials 0.000 description 2
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/281—Interference filters designed for the infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/285—Interference filters comprising deposited thin solid films
Definitions
- This invention concerns night vision auxiliary systems for motor vehicles.
- Systems are known that comprise an infrared headlight, which beams radiation to the outside in front of the vehicle, as well as an infrared camera and a system for transmitting an image taken by the camera in visible form to the driver.
- the headlight has a source of white light and a filter, which suppresses the visible part of the radiation from the radiation source and transmits the part that is in the infrared range.
- this type of filter often lets through some of the visible radiation, especially the radiation in the red color range. But in a headlight, any such red colored radiation that gets through, no matter how intense, is disturbing, since it can cause another driver to become confused between the front lighting and the back lighting of the vehicle. Improving the filter in terms of suppressing the red light while keeping the useful part of the infrared radiation, i.e., the radiation in the range between 800 nm and 1000 nm, is expensive. The problem is that the range to be suppressed (red) is directly connected to the useful infrared range that gets through. For this, the characteristic transmission curve of the filter would have to have steep edges since the very good suppression necessary in the red range is opposed to the very good transmission necessary in the IR range.
- DE 699 03 076 discloses an infrared lighting device that includes a filter whose transmission ratio is designed in such a way that it emits white and infrared radiation along one axis of the device, whereby the intensity of the white radiation can be completely different from zero, but amounts to less than 2000 Cd.
- FIG. 1 shows schematically the transmission ratio T of a filter, as it can be used as a function of the wavelength ⁇ according to one embodiment in DE 699 03 076. The residual visible radiation it transmits is then added to a white color effect.
- Such filters can be produced by a multilayer system. Their reflection and characteristic transmission curves are essentially based on interference effects.
- the filter is made so it may transmit the visible radiation from a radiation source in such a way that there is a synthesis of the visible transmitted part of the white light (see Claim 3 of DE 699 03 076). Since interference filters exhibit angle-dependent transmission behavior, the filter must be adjusted to the respective lighting geometry of the headlight. For example, FIG. 3 a shows a headlight 2 with lighting geometry in which the filter 10 is basically acted on vertically. On the other hand, the lighting geometry of the headlight in FIG. 3 b results in an impact geometry in which the vertical impact plays basically no role. But adjusting the filter to a respective new geometry is time-consuming and hence expensive.
- the problem to be solved with this invention is therefore to provide a filter whose characteristic transmission curve has great tolerance to variations in lighting geometry.
- the basic parameters for the characteristic transmission curve include the optical layer thickness and the indices of refraction of the layers. Slight fluctuations in these parameters during the coating process or, what is much more probable, from one coating to the next, can have an impact on which parts of the visible light will be transmitted. It is difficult to make sure that only a small part of the visible radiation gets through (for example in the range of 0.5%), and small uncertainties in transmission can cause large changes in the color effect.
- Another problem to be solved with this invention is therefore to provide an interference filter needed for high-yield lighting devices that can be produced without requiring cost-intensive measures to reduce production fluctuations.
- FIG. 1 shows schematically the transmission ratio T of a filter, as it can be used as a function of the wavelength e.
- FIG. 2 shows schematically how blue, green, red, and yellow color effects are assigned to a corresponding diagram.
- FIG. 3 a shows a view of the impact geometry of the night-vision auxiliary headlight with a vertical filter.
- FIG. 3 b shows a view of the impact geometry of the night-vision auxiliary headlight with a slanted filter.
- FIG. 4 shows a magnified view of the range in FIG. 2 .
- FIG. 5 shows a corresponding spectral range of the filter in the night-vision auxiliary system.
- FIG. 6 a shows a schematic layout of a night-vision auxiliary headlight.
- FIG. 6 b shows the results of optimization in an angle shift of the filter.
- color effect is determined by basically 3 factors: a) the characteristic radiating curve of the light source (typical light sources reach their maximum in the green or yellow-green spectral range), b) a physiological factor, which is connected with the wavelength-dependent light sensitivity of the human vision system, whereby light sensitivity is highest in yellow and c) the characteristic transmission curve of the optical system used.
- the color effect can be specified by means of so-called color coordinates.
- FIG. 2 shows schematically how blue (B), green (G), red (R) and yellow (Y) color effects are assigned to a corresponding diagram.
- FIG. 2 also shows the range, surrounded by a broken line, in which a white color effect prevails.
- the filter according to the present invention has the property, for a wide range of angles of incidence, of transmitting part of the visible radiation and doing it so that white light is transmitted for basically each of the angles of incidence in the range itself.
- the filter should be used in a night-vision auxiliary system outfitted with an Osram H11 type (12 V, 55 W, 64211 SUP) halogen headlight lamp.
- the corresponding spectral range is shown in FIG. 5 .
- the schematic layout of such a headlight is shown in FIG. 6 a.
- a Corning Glass substrate is used as the substrate material for the filter.
- the coating materials used are niobium oxide as the high-refractive and SiO2 as the low-refractive material for the filter.
- Possible alternative coating materials would be, for example, titanium oxide/silicon oxide or tantalum oxide/silicon oxide.
- ASAP RayTrace Program
- the design is optimized in steps for one angle after the other.
- a design is found that transmits for 20° angles of incidence in the visible range in the center less than 0.5%.
- the design is made so that as of approx. 1040 nm on a width of at least 25 nm in the near infrared range, less than 60% are transmitted.
- the special characteristics of the filter need to remain the same (low transmission in the visible, high transmission in teh infrared) during the optimization.
- the color coordinates are optimized for the angles of incidence 0°, 30° and 40°, so that they fall within the range of the ECE standard.
- the color coordinates produced are not necessarily the same as for the 20° angle of incidence.
- the y coordinate should, with an x coordinate that lies in the interval 0.31 ⁇ x ⁇ 0.45, deviate by a maximum of 0.025 from the straight line defined.
- the color site is no longer in the ECE range, for larger x, a rather horizontal course is desirable, since here the ECE range has the corresponding course.
- Table 1 shows the breakdown of the optical layer thickness design and the refractive index used.
- the refractive index of the materials used is 2.34 for niobium oxide and 1.47 for silicon oxide.
- Sputter technology was used in the example to produce the filter (more specifically: reactive DC magnetron sputtering).
- the optical spectra are registered continuously (monitoring), and the sputter process is corrected if deviations from the desired spectrum calculated are measured. This ensures that the filters made actually have the required optical characteristic curves, especially in the green range. In other words: so that the color coordinates are within ECE white, production monitoring of the product is weighted highest especially in the wavelength range from 480-580 nm.
- PVD and CVD processes are in general PVD and CVD processes.
- thermal evaporation can be used.
- thermal evaporation is supported by ion bombardment (ion assisted deposition, IAD).
- an infrared lighting device for motor vehicles for example a headlight
- the filter may transmit a first visible part of a first partial beam from the radiation source at a first angle and a second visible part of a second partial beam from the radiation source at a second angle different from the first.
- the first angle is basically different from the second angle.
- “basically” means at least 0.5°. It is characteristic that the first visible part transmitted is white light, and the second visible part transmitted is white light.
Abstract
Description
Layer (counted | Optical Layer | |
from substrate) | Thickness [nm] | Material |
1 | 108 | SiO2 |
2 | 73 | Nb2O5 |
3 | 127 | SiO2 |
4 | 144 | Nb2O5 |
5 | 133 | SiO2 |
6 | 100 | Nb2O5 |
7 | 109 | SiO2 |
8 | 94 | Nb2O5 |
9 | 97 | |
10 | 101 | Nb2O5 |
11 | 111 | SiO2 |
12 | 90 | Nb2O5 |
13 | 110 | SiO2 |
14 | 110 | Nb2O5 |
15 | 104 | SiO2 |
16 | 83 | Nb2O5 |
17 | 120 | SiO2 |
18 | 132 | Nb2O5 |
19 | 119 | |
20 | 142 | Nb2O5 |
21 | 147 | SiO2 |
22 | 122 | Nb2O5 |
23 | 120 | SiO2 |
24 | 117 | Nb2O5 |
25 | 171 | SiO2 |
26 | 127 | Nb2O5 |
27 | 134 | SiO2 |
28 | 149 | Nb2O5 |
29 | 158 | SiO2 |
30 | 126 | Nb2O5 |
31 | 118 | SiO2 |
32 | 142 | Nb2O5 |
33 | 154 | SiO2 |
34 | 152 | Nb2O5 |
35 | 144 | SiO2 |
36 | 173 | Nb2O5 |
37 | 154 | SiO2 |
38 | 204 | Nb2O5 |
39 | 156 | Nb2O5 |
40 | 173 | SiO2 |
41 | 156 | Nb2O5 |
42 | 148 | SiO2 |
43 | 243 | Nb2O5 |
44 | 168 | SiO2 |
45 | 136 | Nb2O5 |
46 | 193 | SiO2 |
47 | 139 | Nb2O5 |
48 | 213 | SiO2 |
49 | 146 | Nb2O5 |
50 | 207 | SiO2 |
51 | 145 | Nb2O5 |
52 | 98 | SiO2 |
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/174,835 US7357544B2 (en) | 2004-07-05 | 2005-07-05 | Night vision system for motor vehicles |
US12/020,078 US7575350B2 (en) | 2004-07-05 | 2008-01-25 | Night vision system for motor vehicles |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04015743A EP1621903B2 (en) | 2004-07-05 | 2004-07-05 | Night vision device for vehicles |
EP04015743.0 | 2004-07-05 | ||
US58666404P | 2004-07-09 | 2004-07-09 | |
US11/174,835 US7357544B2 (en) | 2004-07-05 | 2005-07-05 | Night vision system for motor vehicles |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/020,078 Continuation US7575350B2 (en) | 2004-07-05 | 2008-01-25 | Night vision system for motor vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
US20060002124A1 US20060002124A1 (en) | 2006-01-05 |
US7357544B2 true US7357544B2 (en) | 2008-04-15 |
Family
ID=34925614
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/174,835 Expired - Fee Related US7357544B2 (en) | 2004-07-05 | 2005-07-05 | Night vision system for motor vehicles |
US12/020,078 Expired - Fee Related US7575350B2 (en) | 2004-07-05 | 2008-01-25 | Night vision system for motor vehicles |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/020,078 Expired - Fee Related US7575350B2 (en) | 2004-07-05 | 2008-01-25 | Night vision system for motor vehicles |
Country Status (9)
Country | Link |
---|---|
US (2) | US7357544B2 (en) |
EP (2) | EP1621903B2 (en) |
JP (1) | JP4787826B2 (en) |
KR (1) | KR101256235B1 (en) |
CN (2) | CN100451692C (en) |
AT (1) | ATE336017T1 (en) |
DE (1) | DE502004001171D1 (en) |
TW (1) | TWI349760B (en) |
WO (1) | WO2006002558A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4613947B2 (en) * | 2007-12-07 | 2011-01-19 | ソニー株式会社 | Illumination device, color conversion element, and display device |
DE102009056370A1 (en) | 2009-11-30 | 2011-06-01 | Automotive Lighting Reutlingen Gmbh | Motor vehicle reflector has retroflecting reflection element, which is arranged at motor vehicle, where reflection element has interference layer |
US8816306B2 (en) | 2011-12-15 | 2014-08-26 | Battelle Memorial Institute | Infrared light device |
CN102745135A (en) * | 2012-07-24 | 2012-10-24 | 苏州工业园区七星电子有限公司 | Active vehicle infrared night vision system |
JP6786302B2 (en) * | 2016-08-12 | 2020-11-18 | 株式会社小糸製作所 | Lighting device |
CN108347560A (en) * | 2018-01-17 | 2018-07-31 | 浙江大华技术股份有限公司 | A kind of anti-sun of video camera is burnt method, video camera and readable storage medium storing program for executing |
US11906124B2 (en) * | 2021-06-08 | 2024-02-20 | Apple Inc. | Multiband adjustable lights |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4931315A (en) | 1986-12-17 | 1990-06-05 | Gte Products Corporation | Wide angle optical filters |
US5552927A (en) | 1992-10-16 | 1996-09-03 | The Dow Chemical Company | All-polymeric cold mirror |
EP0936107A1 (en) | 1998-02-12 | 1999-08-18 | Valeo Vision | Radiating device for a night vision aid system for vehicle |
FR2800152A1 (en) | 1999-10-26 | 2001-04-27 | Valeo Vision | Automobile headlamp with infrared filter, reflector and beam concentrator which concentrates beam in a long linear zone in which the reflector is situated |
US20010019482A1 (en) | 2000-02-15 | 2001-09-06 | Shoji Kobayashi | Infrared-ray radiating lamp for automobile |
EP1298481A2 (en) | 2001-09-24 | 2003-04-02 | Hella KG Hueck & Co. | Night-vision device for vehicles |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD203983A1 (en) † | 1981-12-31 | 1983-11-09 | Frank Teige | INTERFERENCE FILTER |
US4799745A (en) † | 1986-06-30 | 1989-01-24 | Southwall Technologies, Inc. | Heat reflecting composite films and glazing products containing the same |
CN2058888U (en) * | 1989-10-25 | 1990-07-04 | 张有经 | Motive vehicle front light device |
JPH0486704A (en) * | 1990-07-31 | 1992-03-19 | Iwasaki Electric Co Ltd | Production of metallic dichroic mirror |
JP4544662B2 (en) * | 1999-04-30 | 2010-09-15 | 日本真空光学株式会社 | Visible light blocking infrared transmission filter |
JP2001060403A (en) * | 1999-08-20 | 2001-03-06 | Stanley Electric Co Ltd | Head lamp using visible light cutting shade and night vision device for vehicle using head lamp as lighting source |
DE60017232T2 (en) † | 1999-11-10 | 2005-12-08 | Denglas Technologies, Llc | Niobium oxide based films for thin film optical coatings and methods of making the same |
JP4663918B2 (en) | 2001-06-28 | 2011-04-06 | 日置電機株式会社 | Capacitance measurement method, circuit board inspection method, and circuit board inspection apparatus |
JP2003086146A (en) * | 2001-09-12 | 2003-03-20 | Stanley Electric Co Ltd | Infrared ray bulb and lighting instrument for infrared ray projection with the infrared ray bulb |
-
2004
- 2004-07-05 AT AT04015743T patent/ATE336017T1/en not_active IP Right Cessation
- 2004-07-05 EP EP04015743A patent/EP1621903B2/en active Active
- 2004-07-05 DE DE502004001171T patent/DE502004001171D1/en active Active
-
2005
- 2005-06-17 KR KR1020077001544A patent/KR101256235B1/en not_active IP Right Cessation
- 2005-06-17 WO PCT/CH2005/000339 patent/WO2006002558A1/en active Application Filing
- 2005-06-17 JP JP2007518434A patent/JP4787826B2/en not_active Expired - Fee Related
- 2005-06-17 CN CNB2005800226897A patent/CN100451692C/en not_active Expired - Fee Related
- 2005-06-17 CN CN200810176160.6A patent/CN101440922B/en not_active Expired - Fee Related
- 2005-06-17 EP EP05750588A patent/EP1766444A1/en not_active Ceased
- 2005-07-04 TW TW094122500A patent/TWI349760B/en not_active IP Right Cessation
- 2005-07-05 US US11/174,835 patent/US7357544B2/en not_active Expired - Fee Related
-
2008
- 2008-01-25 US US12/020,078 patent/US7575350B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4931315A (en) | 1986-12-17 | 1990-06-05 | Gte Products Corporation | Wide angle optical filters |
US5552927A (en) | 1992-10-16 | 1996-09-03 | The Dow Chemical Company | All-polymeric cold mirror |
EP0936107A1 (en) | 1998-02-12 | 1999-08-18 | Valeo Vision | Radiating device for a night vision aid system for vehicle |
FR2800152A1 (en) | 1999-10-26 | 2001-04-27 | Valeo Vision | Automobile headlamp with infrared filter, reflector and beam concentrator which concentrates beam in a long linear zone in which the reflector is situated |
US20010019482A1 (en) | 2000-02-15 | 2001-09-06 | Shoji Kobayashi | Infrared-ray radiating lamp for automobile |
EP1298481A2 (en) | 2001-09-24 | 2003-04-02 | Hella KG Hueck & Co. | Night-vision device for vehicles |
Non-Patent Citations (4)
Title |
---|
Anhang 5, Lichtifarbe, Trichromatische Koordinaten, Begrenzungs-,Schluss-,Brems-,Umrissleuchten, May 10, 2007. |
Farbortbox entspr. Streitpatent Anspr. 3 im Vergleich zum ECE-Weiss-Bereich, no date. |
Gottfried Schroeder, "Technische Optik," Kamprath-Reihe, Grundlagen und Anwendungen, 7th Edition, printd Nov. 5, 2007. |
Spindler & Hoyer "Precision Optical" pp. 49-51, May 9, 2007. |
Also Published As
Publication number | Publication date |
---|---|
CN100451692C (en) | 2009-01-14 |
DE502004001171D1 (en) | 2006-09-21 |
JP4787826B2 (en) | 2011-10-05 |
EP1766444A1 (en) | 2007-03-28 |
KR101256235B1 (en) | 2013-04-17 |
CN101440922A (en) | 2009-05-27 |
KR20070027727A (en) | 2007-03-09 |
EP1621903B1 (en) | 2006-08-09 |
WO2006002558A1 (en) | 2006-01-12 |
US20060002124A1 (en) | 2006-01-05 |
JP2008505001A (en) | 2008-02-21 |
TWI349760B (en) | 2011-10-01 |
US7575350B2 (en) | 2009-08-18 |
CN101440922B (en) | 2015-05-13 |
EP1621903B2 (en) | 2010-07-28 |
TW200602590A (en) | 2006-01-16 |
EP1621903A1 (en) | 2006-02-01 |
ATE336017T1 (en) | 2006-09-15 |
CN101019048A (en) | 2007-08-15 |
US20080158898A1 (en) | 2008-07-03 |
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